<template>
    <div>
        <!--面包屑导航区域-->
        <el-breadcrumb separator="/">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>权限管理</el-breadcrumb-item>
            <el-breadcrumb-item>角色列表</el-breadcrumb-item>
        </el-breadcrumb>

        <!--卡片视图区域-->
        <el-card class="box-card">
            <el-row>
                <el-button type="primary">添加角色</el-button>
            </el-row>

            <el-table :data="roleList"  border stripe>
                <!--展开列-->
                <el-table-column type="expand">
                    <template slot-scope="scope">
                        <el-row :class="['bdbottom',i1 === 0 ? 'bdtop':'','vcenter']" v-for="(item1, i1) in scope.row.children" :key="item1.id">
                            <!--渲染一级权限-->
                            <el-col :span="5">
                                <el-tag closable @close="removeRightById(scope.row,item1.id)">{{item1.authName}}</el-tag>
                                <i class="el-icon-caret-right"></i>
                            </el-col>

                            <!--渲染二级和三级权限-->
                            <el-col :span="19">
                                <!--通过for循环嵌套二级权限-->
                                <el-row :class="[i2 === 0 ? '':'bdtop','vcenter']" v-for="(item2,i2) in item1.children" :key="item2.id">
                                    <el-col :span="6">
                                        <el-tag closable @close="removeRightById(scope.row,item2.id)" type="success">{{item2.authName}}</el-tag>
                                        <i class="el-icon-caret-right"></i>
                                    </el-col>

                                    <el-col :span="18">
                                         <el-tag type="warning" v-for="(item3,i3) in item2.children" :key="item3.id" closable @close="removeRightById(scope.row,item3.id)">{{item3.authName}}</el-tag>
                                    </el-col>
                                </el-row>
                            </el-col>
                        </el-row>
                    </template>
                </el-table-column>
                <!--索引列-->
                <el-table-column label="#"  type="index">
                </el-table-column>
                <el-table-column label="角色名称" prop="roleName">
                </el-table-column>
                <el-table-column label="角色描述" prop="roleDesc">
                </el-table-column>
                <el-table-column label="操作" width="300px">
                    <template slot-scope="scope">
                        <el-button type="primary" icon="el-icon-edit" size="mini">编辑</el-button>
                        <el-button type="danger" icon="el-icon-delete" size="mini">删除</el-button>
                        <el-button type="warnning" icon="el-icon-setting" size="mini" @click="showSetRightDialog(scope.row)">分配权限</el-button>
                    </template>
                </el-table-column>
            </el-table>
        </el-card>


        <!--分配权限的对话框-->
        <el-dialog
            title="分配权限"
            :visible.sync="setRightDialogVisible"
            width="30%"
            @close="setRightDialogClosed">
            <!--树形控件-->
            <el-tree :data="roleList" :props="treeProps" show-checkbox node-key="id" default-expand-all :default-checked-keys="defKeys" @node-click="handleNodeClick"></el-tree>
            <span slot="footer" class="dialog-footer">
                <el-button @click="setRightDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="setRightDialogVisible = false">确 定</el-button>
            </span>
        </el-dialog>
    </div>
</template>

<script>
export default {
    data(){
        return {
            //默认选中的节点id值的数组
            defKeys:[],
            //树形空间的属性绑定对象
            treeProps:{
                label:'authName',
                children:'children'
            },
            //控制分配权限的对话框的显示与隐藏
            setRightDialogVisible:false,
            //定义权限树数据
            rightsList:[],
            //所有角色列表的数据
            roleList:[{
                id:30,
                roleName:"主管",
                roleDesc:"技术负责人",
                children:[
                    {
                        id:101,
                        authName:"商品管理",
                        path:null,
                        children:[{
                                id:114,
                                authName:"商品列表",
                                path:null,
                                children:[
                                    {
                                        id:121,
                                        authName:"商品修改",
                                        path:null
                                    }
                                ]
                            },{
                                id:115,
                                authName:"分类参数",
                                path:null,
                                children:[
                                    {
                                        id:122,
                                        authName:"获取参数列表",
                                        path:null
                                    },
                                    {
                                        id:123,
                                        authName:"创建商品参数",
                                        path:null
                                    },
                                    {
                                        id:124,
                                        authName:"删除商品参数",
                                        path:null
                                    }
                                ]
                            },{
                                id:116,
                                authName:"商品分类",
                                path:null,
                                children:[
                                    {
                                        id:125,
                                        authName:"添加分类",
                                        path:null
                                    },
                                    {
                                        id:126,
                                        authName:"删除分类",
                                        path:null
                                    },
                                    {
                                        id:127,
                                        authName:"获取分类详情",
                                        path:null
                                    }
                                ]
                            }
                        ]
                    },{
                        id:102,
                        authName:"用户管理",
                        path:null,
                        children:[{
                                id:117,
                                authName:"用户列表",
                                path:null,
                                children:[
                                    {
                                        id:128,
                                        authName:"添加用户",
                                        path:null
                                    }
                                ]
                            }
                        ]
                    }
                ]
            }]
        }
    },
    created(){
        this.getRolesList()
    },
    methods:{
        //监听权限对话框的关闭事件
        setRightDialogClosed(){
            this.defKeys = []
        },

        //通过递归的形式，获取角色下所有三级权限的id，并保存到defKey数组中
        getLeafKeys(node,arr){
            //如果当前node节点不包含children属性，则是三级节点
            if(!node.children){
                return arr.push(node.id)
            }
            //递归进行调用
            node.children.forEach(item => {
                this.getLeafKeys(item,arr)
            });
        },

        //获取所有角色的列表
        async getRolesList(){
            //发送http请求获取角色信息
            // const {data,res} = await this.$http.get('roles')
            // if(res.meta.status !== 200){
            //     return this.$message.error('获取角色列表失败')
            // }

            // //将获取的角色数据赋值给roleList
            // this.roleList = res.data
            // console.log(this.roleList)
        },

        //根据id删除对应的权限
        async removeRightById(role,rightId){
            const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
                }).catch(err => {
                    return err
                });

            if(confirmResult != 'confirm'){
                return this.$message.info('取消了删除')
            }

            // //发起http请求进行删除
            // const {data,res} = await this.$http.delete(`roles/${role.id}/rights/${rightId}`)
            // if(res.meta.status !== 200){
            //     return this.$message.error('删除权限失败')
            // }
            //role.children = res.data

            this.$message.success('删除权限成功')
        },

        //展示分配权限的对话框
        async showSetRightDialog(role){
            //通过http请求获取所有权限的数据
            // const {data,res} = await this.$http.get('rights/tree')
            // if(res.meta.status !== 200){
            //     return this.$message.info('获取权限数据失败')
            // }
            // this.rightsList = res.data
            this.rightsList = {
                id:30,
                authName:"主管",
                path:"技术负责人",
                pid:0,
                children:[
                    {
                        id:101,
                        authName:"商品管理",
                        path:null,
                        pid:30,
                        children:[{
                                id:114,
                                authName:"商品列表",
                                path:null,
                                pid:101,
                                children:[
                                    {
                                        id:121,
                                        authName:"商品修改",
                                        path:null,
                                        pid:114
                                    }
                                ]
                            },{
                                id:115,
                                authName:"分类参数",
                                path:null,
                                pid:101,
                                children:[
                                    {
                                        id:122,
                                        authName:"获取参数列表",
                                        path:null,
                                        pid:115
                                    },
                                    {
                                        id:124,
                                        authName:"删除商品参数",
                                        path:null,
                                        pid:115
                                    }
                                ]
                            },{
                                id:116,
                                authName:"商品分类",
                                path:null,
                                pid:101,
                                children:[
                                    {
                                        id:125,
                                        authName:"添加分类",
                                        path:null,
                                        pid:116
                                    },
                                    {
                                        id:126,
                                        authName:"删除分类",
                                        path:null,
                                        pid:116
                                    },
                                    {
                                        id:127,
                                        authName:"获取分类详情",
                                        path:null,
                                        pid:116
                                    }
                                ]
                            }
                        ]
                    },{
                        id:102,
                        authName:"用户管理",
                        path:null,
                        children:[{
                                id:117,
                                authName:"用户列表",
                                path:null,
                                pid:102,
                                children:[
                                    {
                                        id:128,
                                        authName:"添加用户",
                                        path:null,
                                        pid:117
                                    }
                                ]
                            }
                        ]
                    }
                ]
            }

            //递归调用，获取权限信息
            this.getLeafKeys(this.rightsList,this.defKeys)
            this.setRightDialogVisible = true
        }
    }
}
</script>

<style lang="less" scoped>
    .el-tag{
        margin:7px;
    }

    .bdtop{
        border-top:1px solid #eee;
    }

    .bdbottom{
        border-bottom:1px solid #eee;
    }

    .vcenter{
        display:flex;
        align-items: center;
    }
</style>